Finite-time control of linear systems subject to parametric uncertainties and disturbances
The authors consider a linear system subject to time-varying parametric uncertainties and to exogenous constant disturbances NEWLINE\[NEWLINE\dot x(t) = A(p)x(t) + B(p)u(t) + G(p)w,NEWLINE\]NEWLINE where \(A(p)\in\mathbb R^{n\times n}\), \(B(p)\in\mathbb R^{n\times m}\) and \(G(p)\in\mathbb R^{n\times l}\). The concept of finite-time boundedness for the state of a system, when not only given initial conditions but also external constant disturbances are considered, is introduced. The main result provided is a sufficient condition guaranteeing finite-time boundedness via state feedback. It can be applied to problems with both non-zero initial conditions and unknown constant disturbances. This condition is turned into an optimization problem involving LMIs. A detailed example is presented to illustrate the proposed methodology.
scientific article; zbMATH DE number 1661408